Odigo says workers were warned of attack
http://www.haaretz.com/print-edition...attack-1.70579
"Odigo, the instant messaging service, says that two of its workers received messages two hours before the Twin Towers attack on September 11 predicting the attack would happen, and the company has been cooperating with Israeli and American law enforcement, including the FBI, in trying to find the original sender of the message predicting the attack. "